Paper-pulp-beating engine



April20,1926. 1,581,464`

l C. W. MORDEN PAPER PULP BEATING ENGINE I Filed July 13, 1922 w i f..Wr/8J Wiley/Ver Aat?.

Patented Apr. 20, 1926. i

UNITED 4sTaTiazs "1,581,464 PATENT OFFICE.

CHARLES WHITNEY HORDEN, OF POBTLAND,VOREGON.

FABER-PULP-BEATING ENGINE.

` Application led J'uly 18, 1922. Serial No. 574,671.

' ment in Paper-Pulp-Beating Engines, of

which the following specification.

The-object of my invention is to provide an improved machine-for makingpulp from harsh stock, such, for example, as chips, ground wood,sulphite screenings` or. kraft stock, which require a thorough beatingor pounding in the first place in order so to bruise the material as toseparate the fibers and permit it to be removedby a'brushing actionfollowing the beating actiom- My machine is especially adapted for usein the hydration of the stock and its refinement so as to produce long,strong fibers;

Brieiiy described, my machine may be said to comprise a rotated memberprovided with a hinged beater element free to beextended radially bycentrifugal force, and an anvil surface arranged to intersect a segmentof the path described by the; eX- tremity of said beater element whenradially extended. Thus during each revolution of said member the beaterelement is caused to deliver a blow on the material spread onl saidanvil Surface with such force as to bruise said material and loosen itsfibers, and

' the beater element is then dragged over said anvil surface to brushout said loosened fibers. q u

My invention may be carrled into practice i by a machine constructedapproximately as shown by the accompanyingdrawings, in

' which z line 2-2 of Fig. v1;

, Fig. 1 is a plan or top view of my machine- Fig. 2 is a sectional viewtaken on the Fig. 3 is a side view taken on the line 3-3 of Fig. 1 andshows a mechanism for adjusting the beater relatively to the anvilsurface of the bed plate;

' f Fig. 4 is a fragmentary vsectional view- -similar to Fig. 2illustrating a modification made up, are keyed to the shaft a, and thebeater arms d are pivoted to the disks by rods e. The shaft la ismounted in bearings f in the lighter bars f and the whole beater elementmay be' moved t0 and from the anvil surface l by means of themechanism'shown in Fig. 3. The lighter bars f are hinged at one end, andon the other end are connected with raising and lowering screws 7' whichare operated by 'means of a hand wheel g, which revolves the shaft g"which in turn revolves the worms 7L. The worms .h revolve worm gears z'which are placed on the screws y' which turn in nuts k, which are placedimmediately under the lighter-bars f. The nuts are positioned tightlyagainst the lighter-bars f and thus any motion of the screws y' willresult in raising and lowering one end of the lighter bars, the otherend of each of the lighter bars being pivoted at fu.

When the beater element is rotated the beater arms strike the anvilsurface l which is set in a recess in the tub m with such force .as tobruise the material spread on the anvil surface to such extent as toloosen the fibers, which arethen separated and brushed out by the beaterarms being dragged over said anvil surface.

The pulp thus beaten and brushed is fiung" by the beaters against thehousing o` and is deflected by a projecting piece p known as a doctor.This causes the pulp to fall back into the tub'm behind the back fall n,and the revolving of the beater causes the whole mass of pulp to moveforward over said back fall and around the mid-feather m as shown by thearrows in Fig. 1 until it comes o back against the dam r.

The function of this dam r is to allow only a proper amount of pulp topass to the beater element vso that the beater arms will not be hamperedin action by having to plow through a large mass of pulp before strikingthe anvil surface. This dam is adjustable by means of racks r on the damand pinions s, which are rotated by a rod t which in turn is rotated bya hand wheel 1].l

This dam r tends tokeep the mass of `pulp from flowing too rapidly tothe beater ele' ment, and the' back fall n tends to keep the pulp frommoving back onto the anvil surface. This back vfall 'also serves anotherpurpose in that it keeps the mass of material close to the beater armsfor a substantial period of time, and thus aids the circulation of thestock by the movement of the beater arms.

In Figs. 1 and 2 I show beaters which are alined and thus the beaterarms in a line will all strike the anvil surface at the. same time. f

In Figs. 4 and 5 I show a manner of sta gering the lines so that thebeater'arins having separate ,stub shafts e', will each beat separately,and thus tends to eliminate 'any pulsating or' jarring action of thebeater arms. I also show in Fig. 4 an anvil surface fw which has twostriking surfaces; in this way the beating is made more frequent and thebrushing action longer.

I claim:

1. In a paper pulp beating engine, a rotated member provided with a hined beater element free to be extended radia y by centrifugal force, andan anvil surface arranged to intersect a segment of the path describedby the extremity of said beater element when radially extended, wherebyduring each rev` olution of said member the beaterelement first willdeliver ay blow on the material spread on said anvil surface tendin tobruise said material and loosen vits fi ers radialljextnded, wherebyduring each revolution of said lmember the beater element first willdeliver a blow on the material spread 0n said anvil surface tending t0bruise said material and loosen its fibers, and the beater element willthen drag over said anvil surface to brush out said loosened fibers; andmeans for adjusting the rotated member relatively to `said anvilsurface.

3. In a aper pulp beating engine, a r0- tated mem er provided with ahinged beater element free to be extended radially by centrifugal force,and an anvil surface arranged to intersect a segment of the pathdescribed by the extremity of said beater element when radiallyextended, whereby during each revolution of said member the beaterelement first will deliver a blow on the material spread on said anvilsurface tending to bruise said material and loosen its fibers, and thebeater element will then drag over said anvil surface to brush out saidloosened fibers; a housing for -said rotated member, and a doctorprojecting from the housing on that side where the beaters leave saidanvil surface.

4. In a pulp making and refining device, a rotated member, a pluralit ofinfiexible beaters hinged to such mem er, bed plate surfaces, saidsurfaces being intersected by the arc described by the extremities ofsaid beaters when radially extended by centrifugal force, and anadjustable gate for controlling the flow ofpulp material onto the bedplate surfaces.

CHARLES WHITNEY MORDEN.

